Forced proximity is a romance trope in which circumstances lock two people into a confined space: a train compartment, a snowed-in hut, a lighthouse in a storm. Since nobody can leave, they have to talk, and talking turns into closeness.
The trope works by switching off ordinary life. No appointments, no friend calling to interrupt, no door that leads anywhere. Two people who would normally avoid each other sit face to face for hours, and the story can give its whole attention to what happens between them.
The markers are clear. There is an external reason, weather, a breakdown, a contract. The time is limited and counted: twelve hours, three days, one week. And the closeness forces touches nobody planned.
“The Train to Verona” is the purest version: twelve hours with no stops beside a stranger who smiles a little too well. In “Stormstill” you miss the last ferry and shelter with a lighthouse keeper who wants no company. And in “Snowbound” the supplies last three days and the hut is very small.
At Everglow you do not just read it. You are the protagonist, and every chapter ends with your move.